F3-12800CL6D-4GBXH + F3-12800CL6D-4GBXH = Freeze in Bios

[eric911]

Hello,

I brought F3-12800CL6D-4GBXH (2GBx2) in March 2011, it works great. I am using ASUS P8P67 EVO mobo with lastest Bios (cpu= i7 2600K, no overclock).

I brought another F3-12800CL6D-4GBXH (total 2GBx4=8GB) yesterday, I found that the system freeze in the bios with default X.M.P setting unless I increase the CAS#Lantency (CL) from 6 to 8.(i.e. 8-8-6-24 1T)

I tested the 2 kit set separately, they work fine with default XMP 6-8-6-24 1T when 1 kit set(but NOT 2 kit sets at the same time) is being used.

Please comments and provide solutions. Thanks.

Thanks in advance,
Eric

[Tradesman]

For two sets together will prob need to go CR of 2T, possibly raise DRAM voltage by .05 and possibley raise MC (Memory Controller) Voltage by .02-.04

[eric911]

Thanks for prompt reply.

Which term in bios represents memory controller voltage. There are many terms related to voltage adjustment.

Please advise. Thanks.

Eric

[Tradesman]

I'll have to check, but believe on the P8P67 it's VTT or similar....I'll try and check into this evening

[eric911]

Thanks for your help.

Eric

[eric911]

Hi,

Increase the ram voltage by 0.05v does not help. Set to 1.65V also cannot help
set to 2T will boot to windows 7 logo, but suddenly blue screen occurs. Cannot boot to desktop.

incompatable 8 GB ram with P8P67 EVO mobo??
Should I return the new ram to have an replacement? still within 7 days.

Thanks.

Eric

[Onslaught2k3]

for the s1155 platform p67/z68 the memory controller voltage should be VCCIO in bios. VCCSA is the system agent bios and is increased to provide stability on the BCLK speeds (defaulting at 100.0). I wouldn't increase (or decrease) the VCCSA voltages at all! DRAM speeds should stay at the manufacturer's specifications first only to increase it slightly should things not work at spec. I also recommend you get an account with the ASUS forums to get support on the p8p67 evo motherboard. I personally use the maximus 4 extreme mobo but the terms used above should still be the same on that motherboard too.

[eric911]

thanks for your reply. However, the hang problem cannot be solved.